Rock with Bubbles

[CarolinaFinder2011]

Found a strange looking rock. Thought it may have been a metorite but it didn't react to a magnet. Any ideas as to what it is? Thanks

 

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[High Plains Digger]

My quick guess without any other imput: hematite, limonite, or very dirty (non-glassy)slag. How about streak plate test? Don't have a streak plate? Well, go to Home Depot and get a piece of bathroom tile with the back unglazed. That is your streak plate. Keep it for future use. But tell us what color the streak from this is. If there are different "materials" or layers in it, try to do those seperately. Try to break the rock in half, or if you have a tile saw, cut it in half. Let's see what it looks like inside. I have been breaking rocks (and eye glasses) since I was 4 years old to see what is inside them. Rocks, that is . Eyeglasses were accidental and incidental to the rocks.

 

[Bum Luck]

Nodules from geothermal processes, maybe iron, maybe calcium carbonate, etc.

Nothing special, but interesting as a curiosity.

 

[CarolinaFinder2011]

Thanks for the opinons HPD and BL. I will do the streak test as soon as I can. I guess I just have an interesting paper weight.

 

[High Plains Digger]

I would still love to see it cut in half. I'm curious if the "bubbles" are just a lump, or if they have been built up from a core piece, resulting in "circles" if cut across the top, or strata if cut across the bubble.

 

[High Plains Digger]

after the diagnosis of another rock as JADE, then how about Jade? What do you think, nuggy?